Difference between the speech of Humans, and the speech of Allah.

What made the greatest impact for me regarding this verse is the analogy that Syed Qutb gave in his famous tafseer Fi Dhilal al Qur’an;

If we take Dirt as the base elements, the best man can do is create bricks; while with that very dirt Allah has created man.

If these Letters are base elements of speech, the best speech man can produce is similar to bricks that he creates with dirt, while Allah’s speech is the Quran that no one can produce even a surah [chapter] similar to.